CN108042884A - A kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor - Google Patents
A kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor Download PDFInfo
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- CN108042884A CN108042884A CN201711397742.2A CN201711397742A CN108042884A CN 108042884 A CN108042884 A CN 108042884A CN 201711397742 A CN201711397742 A CN 201711397742A CN 108042884 A CN108042884 A CN 108042884A
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- heart rate
- blood transfusion
- drop
- blood
- microcontroller
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
- A61M5/1684—Monitoring, detecting, signalling or eliminating infusion flow anomalies by detecting the amount of infusate remaining, e.g. signalling end of infusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
- A61B5/14551—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters for measuring blood gases
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16804—Flow controllers
- A61M5/16813—Flow controllers by controlling the degree of opening of the flow line
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
- A61M5/16886—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body for measuring fluid flow rate, i.e. flowmeters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/18—General characteristics of the apparatus with alarm
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/33—Controlling, regulating or measuring
- A61M2205/3331—Pressure; Flow
- A61M2205/3334—Measuring or controlling the flow rate
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/04—Heartbeat characteristics, e.g. ECG, blood pressure modulation
- A61M2230/06—Heartbeat rate only
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2230/00—Measuring parameters of the user
- A61M2230/20—Blood composition characteristics
- A61M2230/205—Blood composition characteristics partial oxygen pressure (P-O2)
Abstract
A kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor.Belong to field of medical device.It solves the problems, such as patient, and psychological burden is greatly in transfusion procedure and the labor intensity of medical care is high.The heart rate blood oxygen transducer of Intelligent heart rate control blood transfusion instrument, drip speed detector, alarm module, drop velocity control device and display module are both connected on microcontroller, the real-time monitor heart rate of heart rate blood oxygen transducer and blood oxygen index simultaneously send the data to microcontroller, drop speed detector monitors the drop speed of drop in Murphy tube and sends the data to microcontroller in real time, display module real-time display heart rate, blood oxygen and fast three parameters of drop, when heart rate and blood oxygen Indexes Abnormality, alarm module is alarmed, it drips velocity control device and lowers integral drip speed in the control of microcontroller, power module is powered for all power units.The present invention can be with existing blood transfusion tube perfect matching, and application method is simple, easy for installation.
Description
Technical field
The invention belongs to field of medical device, and in particular to a kind of intelligence blood transfusion instrument.
Background technology
Blood transfusion plays an important role in clinical treatment, has an one-hundred-year history, it is conventional be all lesion nurse's venous transfusion after,
It goes to be accompanied and attended to by family members to other Case treatments again, nurse call again when there is something special is so very dangerous.In every case regular blood transfusion person
Because anaemia body is all very weak, blood transfusion is too fast to be easy to cause heart failure.It transfused blood slow, blood is caused to damage, it is bad anti-that blood transfusion occurs
Should, therapeutic purposes are not achieved, are also easy to that malpractice occurs.
In the prior art, clinically the structure of common blood transfusion tube and common transfusion tubing seemingly, the upper end of blood transfusion tube and blood
Bag connection, the lower end of blood transfusion tube are provided with syringe needle, and the epimere for writing pipe is in series with to show the Murphy tube of transfusion speed.This
The purpose of invention is：Blood transfusion control device a kind of simple in structure and with the structure matching of existing blood transfusion tube is designed, to disappear
Except existing security risk during regular blood transfusion.
The content of the invention
The present invention provides a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor, and the equipment safety is reliable, behaviour
Make simple, high degree of automation, the blood oxygen variation of patient's body can be observed at any time in blood transfusion, so as to alleviate the psychology of patient
Burden and the labor intensity of medical care, decrease the generation of Adverse transfusion reaction.
Technical problem solved by the invention is realized using following technical scheme：The present invention provides a kind of with blood oxygen prison
The Intelligent heart rate control blood transfusion instrument of brake, including microcontroller, heart rate blood oxygen transducer, drop speed detector, alarm module, drop
Velocity control device, display module and power module, heart rate blood oxygen transducer, drop speed detector, alarm module, drop speed control dress
It puts and is both connected to display module on microcontroller, the real-time monitor heart rate of heart rate blood oxygen transducer and blood oxygen index and by data sending
To microcontroller, drop speed detector monitors the drop speed of drop in Murphy tube and sends the data to microcontroller in real time, shows mould
Block real-time display heart rate, blood oxygen and fast three parameters of drop, when heart rate and blood oxygen Indexes Abnormality, speed control is dripped in alarm module alarm
Device lowers integral drip speed in the control of microcontroller, and power module is powered for all power units.
As further technical solution, the drop speed detector including U-clamp, is provided with red on the inside of U-clamp
Drop speed detector is fixed on the outside of Murphy tube by U-clamp by outer sensor.
Include emitting the infraluminescence two of infrared ray as further technical solution, in the infrared sensor
Pole pipe and the infrared photodiode for receiving infrared-ray, the drop to drip in Murphy tube by infrared light-emitting diode and
Between infrared photodiode.
As further technical solution, the drop velocity control device, including blood transfusion tube card slot and stepper motor, blood transfusion
Pipe clamp is in blood transfusion tube card slot, and stepper motor is mounted on the side of blood transfusion tube card slot, and electric pushrod is provided on stepper motor, electricity
Dynamic push rod is against on blood transfusion tube.
As further technical solution, it is provided with to prevent blood transfusion tube from defeated at the notch of the blood transfusion tube card slot
The bulb spring-loaded plunger skidded off in blood vessel card slot.
As further technical solution, the microcontroller is STC89C52 single chip.
As further technical solution, the heart rate blood oxygen transducer is MAX30102 heart rate blood oxygen detection modules.
As further technical solution, the alarm module is audible-visual annunciator.
As further technical solution, the display module is LED display board.
The present invention is a kind of intelligent transfusion set, can be with existing blood transfusion tube perfect matching, and application method is simple, installation side
Just, specific advantageous effect is presented as：
1. the present invention dynamically adjusts the drop of blood speed according to the changes in heart rate of patient, when heart rate is fast, slow down drop speed, heart rate
Accelerate drop speed when slow, to prevent cardiac preload increase from causing heart failure.
2. blood transfusion is supplement red blood cell mostly, blood oxygen saturation is improved, the present invention is supervised by heart rate blood oxygen transducer dynamic
Blood oxygen saturation is surveyed, blood can be perceived immediately and enter whether reach ideal treatment in vivo.
3. after blood transfusion, by sound-light alarm, blood transfusion is prompted to finish, and pass through and drip velocity control device blood transfusion is automatically closed
System.
4. the technical solution adopted by the present invention security is good, precision is high, and at low cost, small power consumption is easy to operate, convenient, flexible,
It is pollution-free.
Description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
The structure diagram of Fig. 2 drop velocity control devices；
Fig. 3 is the system construction drawing of STC89C52 single chip；
Fig. 4 is the connection circuit diagram of MAX30102 hearts rate blood oxygen detection module and microcontroller；
Fig. 5 is the circuit diagram for dripping speed detector；
Fig. 6 is the control circuit single-chip connection circuit diagram of stepper motor.
In figure：1- blood transfusion tube card slots, 2- electric pushrods, 3- stepper motors, 4- blood transfusion tubes, 5- Murphy tubes, 6-
Infrared light-emitting diode, 7-U clevis, the infrared photodiodes of 8-, 9- bulb spring-loaded plungers.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
The present embodiment include microcontroller, heart rate blood oxygen transducer, drop speed detector, alarm module, drop velocity control device,
Display module and power module, heart rate blood oxygen transducer, drop speed detector, alarm module, drop velocity control device and display mould
Block is both connected on microcontroller, and the real-time monitor heart rate of heart rate blood oxygen transducer and blood oxygen index simultaneously send the data to microcontroller,
Drop speed detector monitors the drop speed of drop in Murphy tube 5 and sends the data to microcontroller in real time, and display module is shown in real time
Show heart rate, blood oxygen and fast three parameters of drop, when heart rate and blood oxygen Indexes Abnormality, alarm module alarm, drop velocity control device is in list
Integral drip speed is lowered in the control of piece machine, and power module is powered for all power units.
Based on above-mentioned intelligence control system, the present invention can dynamically adjust the drop of blood according to the changes in heart rate of patient
Speed when heart rate is fast, slows down drop speed, when heart rate is slow, accelerates drop speed, to prevent cardiac load increase from causing heart failure.In transfusion procedure,
The present invention can perceive whether blood reaches preferable into internal immediately by heart rate blood oxygen transducer dynamic monitoring blood oxygen saturation
Therapeutic effect.After blood transfusion, by sound-light alarm, blood transfusion is prompted to finish, and pass through and drip velocity control device blood transfusion is automatically closed
System.
As further technical solution, the drop speed detector, including U-clamp 7, the inside of U-clamp 7 is provided with
Drop speed detector is fixed on the outside of Murphy tube 5 by U-clamp 7 by infrared sensor.
Dripping the principle of speed detector is：Drop of blood is detected in 5 both sides of Murphy tube using infrared photoelectric sensor.
Drop speed detector is made into clip like, is clipped in 5 both sides of Murphy tube.Infrared photoelectric sensor and other level detection methods, survey
Method, electrode method compare simple with circuit again, and external interference is small, and stability is good, at low cost, small, and use is contactless
Measurement, pollution-free, the advantages of security is good.When drop of blood flows through Mo Fei Guan Shi 5, by two pole of infraluminescence on sensor both sides
Pipe 6 and infrared photodiode 8 and sense, each bleed will generate a pulse signal when passing through, pass to signal processing
Circuit, these signals are sent into SCM system and carry out signal processing, and draw control instruction after enhanced processing.
The circuit control part in speed detector is dripped by operational amplifier, adjustable knob resistance circuit and NE555 timings
3 parts of device are formed.Profound and negative feedbck circuit is built into using integrated operational amplifier and related resistors to control putting for voltage
The weak voltage signals that sensor exports are amplified by big multiple.The voltage signal amplified through operational amplifier passes through conducting wire
The signal input part of the incoming similar Schmitt trigger circuit built with NE555 timers.Schmidt trigger can will be through
Voltage signal shapings that cross amplification, minor variations are transformed into step signal, generate logical zero and logical one, are simply completed
A/D is converted, and generates the Threshold Alerts voltage of saltus step.NE555 timers used in us belong to ambipolar, the timing of the model
Device driving force is strong, alarm portion can be driven to work normally completely.
Include emitting the infraluminescence two of infrared ray as further technical solution, in the infrared sensor
Pole pipe 6 and the infrared photodiode 8 for receiving infrared-ray, the drop to drip in Murphy tube 5 pass through two pole of infraluminescence
Between pipe 6 and infrared photodiode 8.
As further technical solution, the drop velocity control device is defeated including blood transfusion tube card slot 1 and stepper motor 3
Blood vessel 4 is clipped in blood transfusion tube card slot 1, and stepper motor 3 is mounted on the side of blood transfusion tube card slot 1, is provided on stepper motor 3 electronic
Push rod 2, electric pushrod 2 are against on blood transfusion tube 4.Stepper motor 3 uses import NMB35 micro-step motors, has small, work(
Rate is big, the characteristics of operating steadily.Its technical indicator is：75 Europe of phase resistance, phase current 0.5A, stroke 8mm, prestissimo 6mm/s.
Electric pushrod 2 is integrated design, telescopic extensions 8mm with stepper motor 3.It is made, had dynamic of NMB bearings and carbon steel screw
Make fast, precision is high, it is wear-resisting the advantages that.
As further technical solution, be provided with to prevent at the notch of the blood transfusion tube card slot 1 blood transfusion tube 4 from
The bulb spring-loaded plunger 9 skidded off in blood transfusion tube card slot 1.
As further technical solution, the microcontroller is STC89C52 single chip.STC89C52 is a kind of band 8K
Byte flickers the low-voltage of programmable erasable read-only memory, high-performance COMOS8 microprocessors.STC89C52 single chip
Small, light weight, cheap, applicating and exploitation all very extensively, can be compatible with various chips.Meanwhile STC89C52 is mono-
Piece machine has two kinds of 12 clocks/machine cycle and 6 clocks/machine cycle, can arbitrarily select.
The fast controller operation principle of drop includes two kinds of control modes：A. after blood transfusion, infrared electro drop counting sensor
Drop number controller signal is transmitted to, stepper motor pushrod movement reaches blood transfusion apparatus completely closed state, terminates blood transfusion.B. heart rate is worked as
When inductor works, heart rate inductive signal is transferred to microcontroller, after microcontroller is handled, exports to stepper motor, controls stepping
The movement of motor push rod, stepper motor just switch to advance, and drop number is reduced, and stepper motor is reversed to retreat, and drop number increases.
Provided according to clinical blood transfusion technical specification, in transfusion procedure should it is first slow after it is fast, start 15 minutes no more than 20 drops/
Point, adjust infusion velocity further according to the state of an illness and age.Normal person's transfusion speed is 5-10ml/min；It is old and frail and have cardiopulmonary work(
Energy obstacle person, transfusion speed is preferably slow, 1-1ml/min；One unit Red Blood Cells Suspension about 200ml, general 60 points of normal adult
It is totally lost, when most long small no more than 4, just meets code requirement.By this regulation, two patterns are set：
A. old man's pattern：Start 15 points, by 20 drop/point.1ml i.e. per minute.After 15 points, drop speed is automatically controlled by heart rate.
B. adult mode：Start 15 points, by 20 drop/point.1ml i.e. per minute.After 15 points, drop speed is automatically controlled by heart rate.
One unit Red Blood Cells Suspension about 180ml, by old man's mode computation, 75 beats/min of average heart rate is designed as
1.5ml/ points, about 120 points are totally lost.It is slowly most 0.75ml/ points, is about totally lost for 240 points, when also small no more than 4.Based on adult mode
It calculates, average heart rate is 75 beats/min, is designed as 3.5ml/ points, and about 51.43 points are totally lost, and complies fully with blood transfusion regulation.The setting is by most
High heart rate is 90 beats/min of settings, although 90-100 beats/min is also normal cardiac rate.But compatriots' average heart rate is 75 beats/min, such as
Fruit Heart Rate is always at 90 beats/min or more, in fact it could happen that other diseases sign reminds clinician nurse to be carried out in blood transfusion
There is abnormal stopping blood transfusion immediately in monitoring.It is minimum to press 60 beats/min of settings, it is that consideration is the normal heart for 60 beats/min in addition to heart disease
Rate, some Healthy Peoples or sportsman are even lower than 60 beats/min, therefore offline target setting is wide in range.
As further technical solution, the heart rate blood oxygen transducer is MAX30102 heart rate blood oxygen detection modules.
MAX30102 is the module of an integrated heart rate monitor instrument and blood oxygen biosensor.It is integrated with one it is red
Light LED and an infrared light LED, photoelectric detector, optical device and the Low-Noise Electric Circuit with environment Xanthophyll cycle.He adopts
Be used for the power supply of internal LED with a 1.8V power supply and independent 5.0V, it is wearable in finger, ear-lobe and wrist etc. into
Row heart rate and blood oxygen acquisition testing.Standard I2C compatibility communication interface can by the data transfer collected to Arduino,
The microcontrollers such as STC89C52, KL25Z carry out heart rate and blood oxygen calculates.In addition, the chip can also be standby by software switching-off module
Electric current is close to zero, and realizes that power supply maintains power supply state always.Possess optimal most reliable performance.
MAX30102 heart rate blood oxygen transducer parameters：
Circuit board size：18*15mm
Circuit plate thickness：2.5mm
LED peak wavelengths：660nm/880nm
LED supply voltages：3.3~5v
Detect signal type：Light reflection signal (PPG)
Export signaling interface：I2C interface
Communication interface voltage：1.8~5V
The principle explanation of MAX30102 heart rate blood oxygen transducers：
There are mainly three types of traditional pulses measure methods：First, extracted from electrocardiosignal, second is that from measurement blood pressure when press
The fluctuation that force snesor measures calculates pulse frequency, third, photoplethymograph.First two method extraction signal can all limit patient
Activity, if use for a long time can increase patient's physiology and psychological discomfort.And photoplethymograph pulses measure conduct
One of most common method in monitoring measurement has the characteristics that method is simple, wearing is convenient, reliability is high.Photoplethymograph
Basic principle be to cause light transmittance difference in vascular pulsation using tissue to carry out pulse and oxygen saturation measurement
's.Its sensor used is made of light source and photoelectric transformer two parts, by bandage or clip be fixed on patient finger,
In wrist or ear-lobe.Light source is generally using selective to oxyhemoglobin in arterial blood (HbO2) and hemoglobin (Hb)
The light emitting diode (the general infrared light selected near feux rouges and 900nm near 660nm) of specific wavelength.When light beam penetrates people
Peripheral body pipe, since the variation of arteriopalmus hyperemia volume causes the light transmittance of this Shu Guang to change, at this time by light-to-current inversion
Device receives the light reflected through tissue, is changed into electric signal and is amplified and exported.Since pulse is fighting with heart
Dynamic and periodically variable signal, the also cyclically-varying of arteries volume, therefore the change in electric cycle of photoelectric transformer
It is exactly pulse frequency.
MAX30102 is integrated with complete light-emitting LED and drive part in itself, and photoinduction and AD conversion part, ambient light are done
Elimination and digital filtering part are disturbed, only leaves digital interface for user, dramatically reduces the design burden of user.User only needs
The FIFO of MAX30102 in itself are read by Hardware I2C or simulation I2C interface using microcontroller, it is possible to be converted
Optical power values afterwards can be obtained by heart rate value and blood oxygen saturation by writing respective algorithms.
As further technical solution, the alarm module is audible-visual annunciator.Infrared photoelectric sensor senses
During pulse-free signal, represent that blood transfusion finishes, send signal after single chip microcomputer is handled, draw alarm control signal, then by buzzing
Device warning device sends the sound and light emitting diode lamp is lighted (night is especially suitable), blood transfusion is prompted to terminate, nurse fetches
Blood transfusion apparatus and blood transfusion instrument.
As further technical solution, the display module is LED display board.LED display board can be used
LCD12864B liquid crystal displays, the display device have that effective area is big, and font is big, and multirow is shown, clear writing, low in energy consumption,
The advantages that cost-effective.And with backlight function, night is suitble to use.Its driving chip is Chinese Graphic Liquid Crystal Module ST7920
Controller, built-in 8192 Chinese characters.ST7920 simultaneously as controller and driver, it can provide 33 road com outputs and
64 road seg are exported.Under the cooperation of driver ST7921,256 × 32 lattice lcds can be at most driven.And with a variety of soft
Part function：Word and figure mixed display function, picture removing function, cursor home function, display on/off function, cursor are shown
Show/hidden function, display font flashing function, cursor shift function shows shift function, and straight picture spinfunction highlights aobvious
Show function, sleep state.
The important technological parameters of LCD12864B liquid crystal displays：
Power supply：VDD 3.3V~+5V
Display content：128 × 64 rows of row
Display color：Yellowish green/blue screen/ash screen
Angles of display：6：00 clock is looked at straight
LCD type：STN
With MCU interfaces：The Bits Serial of 8 or 4 parallel-by-bits/3
Configure LED backlight
The programmed control process of the present invention is as follows：
Whole programs use modular construction, i.e., are made of a main program and several subroutine modules.Main program is first
Initial work is first completed, including timer initialization, Liquid Crystal Module initialization, interruption initializes, system clock initializes, it
Initialization of his parameter etc..Then startup timer is timed, and opening interruption allows microcontroller to respond in internal interrupt and outside
Disconnected request.Each program function module includes the fast detection circuit of display module driving circuit, drop, heart rate blood oxygen transducer, drop speed control
Circuit processed, stepper motor driving circuit, alarm module driving circuit etc..After dripping the startup of number detection device, pass through inductive signal, pass
Microcontroller is passed, and drop number is shown by display module.Then heart rate blood oxygen transducer starts, and passes data to microcontroller,
And show that (this is detected as heart rate (this is shown as pulse frequency, and normal value is 60-100 beats/min) and blood oxygen saturation by display module
Arterial blood normal value is 95.5%-98%).Drop velocity control device is transferred to according to heart rate by default program simultaneously, is carried out just
Negative-feedback dynamic regulation transfusion speed accomplishes automation, intelligence.To the end of blood transfusion, drop number detection device experiences no pulse
Signal is passed to drop velocity control device, and is turned off by signal, while starts audible-visual annunciator, reminds medical staff, blood transfusion
Terminate.
The application method and points for attention of the present invention：
Application method：The device is easy to operate, and exchange 220v and built-in DC power supply may be selected.First by drop number detection dress
The middle part for being horizontally clamped in Murphy's tube 5 is put, i.e., between drop and liquid level.Then 4 times 1/3 straight-tube portions of blood transfusion tube are put into drop
In the blood transfusion tube card slot 1 of velocity control device, it is steady to be laid flat folder.Heart rate blood oxygen transducer is clipped on patient's middle finger, and power on start,
Machine enters self-test state, by mode selecting button, according to patient selection old man and adult mode, starts to do venipuncture, wear
Thorn, which finishes, opens the flow regulator that carries on blood transfusion tube, and blood starts to flow, display module start display drop number, heart rate,
The data such as blood oxygen, instrument start automatic running.Blood transfusion terminates, and sends sound-light alarm automatically, and the alarm that need to only close on instrument is opened
Pass.
Points for attention：
1st, accurate chip built in the instrument, need to handle with care, prevent from damaging.
2nd, it is interior to have high pressure, it must not opens voluntarily instrument internal.
3rd, it must not drench with rain or intake.
It is performed when the 4th, operating by regulation.The flow regulator that blood transfusion tube carries must be opened entirely, must not half pass semi-closure.Blood transfusion
Hose is put in place.It is correct to drip number detection clip position.
5th, the instrument is suitable for chronic blood transfusion patient, is unsuitable for emergency treatment blood transfusion patient, children, which transfuse blood, needs another arrange parameter
(children's heart rate is very fast).
6th, for have the patient of arrhythmia cordis can take the circumstances into consideration consider, be unsuitable for nodal tachycardia and sinus bradycardia, it is right
Uneven in sinus rate, premature beat etc. can use.
The system uses STC89C52 single chip, simplifies the hardware configuration of system, improves the reliability and reality of system
Shi Xing, and blood transfusion intelligence is realized, greatly reduce the generation of Adverse transfusion reaction and malpractice.It is pressed by system testing
Program setting according to changes in heart rate control blood transfusion drop speed measurement error for ± 2-3 drops/point, meet design specification requirement.Drip number
It is accurate that detection device counts, and audible-visual annunciator is quick on the draw, and it is timely that drop velocity control device closes blood transfusion pipeline.The apparatus is equal
Outside blood transfusion apparatus, it is not required to additionally sterilize, does not contact liquid and avoid cross-infection, meet infection management code requirement.
In conclusion the Instrument Design is scientific and reasonable, security is good, at low cost, and small power consumption is easy to operate, accurately and reliably,
Be easy to debug, can Reusability, reduce medical treatment cost, also mitigate the working strength of medical staff, while also can reduction of patient
Nervous psychology when transfusing blood with family members.The instrument is not only suitable for large hospital and basic hospital is promoted, and is also applied for wartime, has
Good application prospect.
Claims (9)
1. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor, it is characterised in that：Including microcontroller, heart rate blood oxygen
Sensor, drop speed detector, alarm module, drop velocity control device, display module and power module, heart rate blood oxygen transducer,
Drop speed detector, alarm module, drop velocity control device and display module are both connected on microcontroller, and heart rate blood oxygen transducer is real
When monitor heart rate and blood oxygen index and send the data to microcontroller, drop speed detector monitors drop in Murphy tube in real time
Drop speed simultaneously sends the data to microcontroller, and display module real-time display heart rate, blood oxygen and fast three parameters of drop, heart rate and blood oxygen refer to
When mark is abnormal, alarm module alarm, drop velocity control device lowers integral drip speed in the control of microcontroller, and power module is all electricity consumptions
Unit is powered.
2. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 1, it is characterised in that：
Including U-clamp, infrared sensor is provided on the inside of U-clamp for the drop speed detector, will drip speed detection by U-clamp
Device is fixed on the outside of Murphy tube.
3. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 2, it is characterised in that：
Include the infrared light-emitting diode for emitting infrared ray and the infrared light for receiving infrared-ray in the infrared sensor
Quick diode, the drop to drip in Murphy tube pass through between infrared light-emitting diode and infrared photodiode.
4. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 1, it is characterised in that：
The drop velocity control device, including blood transfusion tube card slot and stepper motor, blood transfusion tube is clipped in blood transfusion tube card slot, stepper motor peace
Mounted in the side of blood transfusion tube card slot, electric pushrod is provided on stepper motor, electric pushrod is against on blood transfusion tube.
5. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 4, it is characterised in that：
The bulb spring-loaded plunger for preventing blood transfusion tube from being skidded off out of blood transfusion tube card slot is provided at the notch of the blood transfusion tube card slot.
6. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 1, it is characterised in that：
The microcontroller is STC89C52 single chip.
7. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 1, it is characterised in that：
The heart rate blood oxygen transducer is MAX30102 heart rate blood oxygen detection modules.
8. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 1, it is characterised in that：
The alarm module is audible-visual annunciator.
9. a kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor according to claim 1, it is characterised in that：
The display module is LED display board.
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| CN201711397742.2A CN108042884A (en) | 2017-12-21 | 2017-12-21 | A kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor |
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| CN201711397742.2A CN108042884A (en) | 2017-12-21 | 2017-12-21 | A kind of Intelligent heart rate control blood transfusion instrument with oxygen saturation monitor |
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| CN110354336A (en) * | 2019-07-17 | 2019-10-22 | 盐城金沃医疗科技有限公司 | A kind of infusion flow monitoring device |
| CN111282086A (en) * | 2020-03-02 | 2020-06-16 | 利辛县儒康医药有限公司 | Infusion device |
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